| 摘要 |
1,185,917. Analysing segmented stream. TECHNICON CORP. 30 MaTch, 1967 [14 April, 1966], No. 14423/67. Heading B1X. [Also in Division G1] A method of analysis of a plurality of liquid samples from sample containers 14 comprises transmitting the samples successively as a flowing stream of samples in tube 20, separating the stream into a plurality of sections by introducing through tube 30 portions of a liquid which is substantially immiscible with and inert towards the liquid samples, treating the flowing stream of samples for analysis by adding reagent through tube 38, and passing the flowing stream of treated samples including the immiscible liquid portions through an analytical instrument, for example colorimeter 46. A silicone fluid may be used as the immiscible liquid. If air is not to be admitted to the sample stream, valve 72 operatively coupled to off-take mechanism 16 connects a diluent supply line 72c to the sample line 20 at the times when the off-take tube is lifted out of a sample container. The admission of the immiscible liquid to tube 30 may be accurately controlled by a pinch valve 74 which is operated by the peristaltic pump. Valve 74 may be operatively connected to motor 66, with timedelay means if necessary, to prevent the recorder stylus 68 from making excessive movements when an immiscible liquid portion is passing through the colorimeter 46. |
